Those who watch Twitter from a certain, occasionally perplexed vantage point took note recently as a long-running mystery was solved. John LeFevre, a former bond trader living in Texas, “was exposed” as the creator of @GSElevator (Goldman Sachs Elevator Gossip). The account passed along supposedly overheard sour nothings (more braggadocio and bon mots than actual gossip) straight from the black heart of America’s favorite financial institution to 647,000 followers. According to Dealbook’s Andrew Ross Sorkin, the identity of the gossip monger became the subject of a Wall Street “parlor game”: just who was GSElevator, and why would he risk his no-doubt lucrative career by sharing co-workers’s private (if insensitive) musings?